[Neoselachii] Compagno, 1977 - modern sharks and rays see Infraclass Elasmobranchii Bonaparte, 1838 Order Carcharhiniformes Compagno, 1973 - ground sharks Family Hemigaleidae Hasse, 1878 - weasel sharks Genus Hemigaleus Bleeker, 1852 [monotypic] Hemigaleus microstoma Bleeker, 1852 - sicklefin weasel shark